Wanting to change from STs to LTs..........
We are the proud new owners of a 2007 K-Z Sportsman 5th wheel. The unit is in EXCELLENT shape for its age. This is our first (but likely won't be our last). I have read numerous posts on the argu...
Forum Discussion
bpounds wrote:
My question would be, what size and weight is your KZ Sportsman. Looking at the current specs, the largest fiver in that series is only a GVWR 8,800lbs trailer.
Assuming yours is of similar size, you've got plenty of tire in an ST 225/75-15 LRD. Four of those would have a rating of a bit over 10k, and an 8,800lb trailer would only ride about 6k - 7k lbs on the tires.
You are new here, and you've read all the horror stories about ST tires, but you may be missing the fact that those failures are common on big trailers where the manufacturer has spec'd tires that barely squeak over the GVWR of the trailer. Plus the fact that we've got some really noisy ST haters around here.
I suspect you're throwing a lot of money at a problem that doesn't exist. At most you could consider going up to an E rated tire in the same size, and probably only pay around $25 total extra for all four over the D rated.
On Edit: I see now where you noted the GVWR is 10k. So a little more than their current product line. Still a light trailer, and my advice doesn't change. At most you'll be running at 80% of LRD tire rating, and it would be even a lower percent on LRE tires.
My Komfort has a GVW of 11,300 lbs and came with D's. I upgraded to E's and feel much better. I always run at 80 psi unless I'm =really= light, then drop to 70.
Lyle
